What Do Feed my khaki campbell ducks?

[DuckPan]

What Do Feed my khaki campbell ducks for egg laying? something atwoods or the farmers co-op would have.

 

[Amiga]

I feed my Runners and Buffs Blue Seal Organic layer pellets, and then supplement with fresh greens, fodder, sprouted wheat, flaxseed, a tiny bit of cat kibble from time to time, and calcium citrate (due to a number of ducks having thin shells on just the layer pellets and free choice oyster shell).

What are your options at those stores? I have not always fed Blue Seal, I have fed Mazuri and Countryside.